Endangered language

https://www.wikidata.org/wiki/endangeredlanguage

Allows Extra Properties:

Each Of:

Property	Type	Cardinality
instance of	vulnerable languagedefinitely endangered languageseverely endangered languagecritically endangered languageextinct language	1 - 1
UNESCO language status	2 vulnerable3 definitely endangered4 severely endangered5 critically endangered6 extinct	1 - 1
country		0 - ∞
writing system		0 - ∞
http://www.wikidata.org/prop/direct/P12341		0 - ∞
ISO 639-3 code	literal	1 - 1